package com.train.mgr.config.poi;

import cn.hutool.core.convert.Convert;
import cn.hutool.core.util.NumberUtil;
import com.alibaba.fastjson2.JSONObject;
import com.train.common.utils.*;
import com.train.mgr.config.annotation.Excel;
import com.train.mgr.config.annotation.ExcelFile;
import com.train.mgr.config.annotation.Excels;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import cn.hutool.core.util.ReflectUtil;
import javax.servlet.http.HttpServletResponse;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

/**
 * Excel相关处理
 *
 * @author ruoyi
 */
public class ExcelUtil<T> {
    private static final Logger log = LoggerFactory.getLogger(ExcelUtil.class);

    /**
     * Excel sheet最大行数，默认65536
     */
    public static final int sheetSize = 65536;

    /**
     * 工作表名称
     */
    private String sheetName;

    /**
     * 导出类型（EXPORT:导出数据；IMPORT：导入模板）
     */
    private Excel.Type type;

    /**
     * 工作薄对象
     */
    private Workbook wb;

    /**
     * 工作表对象
     */
    private Sheet sheet;

    /**
     * 样式列表
     */
    private Map<String, CellStyle> styles;

    /**
     * 导入导出数据列表
     */
    private List<T> list;

    /**
     * 注解列表
     */
    private List<Object[]> fields;

    /**
     * 注解列表
     */
    private List<NameMapping> mappingFields;

    /**
     * 当前行号
     */
    private int rownum;

    /**
     * 标题
     */
    private String title;

    /**
     * 最大高度
     */
    private short maxHeight;

    /**
     * 统计列表
     */
    private Map<Integer, Double> statistics = new HashMap<Integer, Double>();

    /**
     * 数字格式
     */
    private static final DecimalFormat DOUBLE_FORMAT = new DecimalFormat("######0.00");

    /**
     * 实体对象
     */
    public Class<T> clazz;

    public ExcelUtil(Class<T> clazz) {
        this.clazz = clazz;
    }

    public ExcelUtil(){}

    public void init(List<T> list, String sheetName, String title, Excel.Type type) {
        if (list == null) {
            list = new ArrayList<T>();
        }
        this.list = list;
        this.sheetName = sheetName;
        this.type = type;
        this.title = title;
        createExcelField();
        createWorkbook();
        createTitle();
    }

    private void init(String sheetName, String title) {
        this.list = new ArrayList<>();
        this.sheetName = sheetName;
        this.type = Excel.Type.EXPORT;
        this.title = title;
        this.createExcelField();
        this.createWorkbook(true);
        this.createTitle();
    }

    /**
     * 创建excel第一行标题
     */
    public void createTitle() {
        if (StringUtils.isNotEmpty(title)) {
            Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);
            titleRow.setHeightInPoints(30);
            Cell titleCell = titleRow.createCell(0);
            titleCell.setCellStyle(styles.get("title"));
            titleCell.setCellValue(title);
            sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(),
                    this.fields.size() - 1));
            // 设置行高自适应
            this.cellAndSetRowHeight((XSSFRow) titleRow);
        }
    }

    /**
     * 对excel表单默认第一个索引名转换成list
     *
     * @param is 输入流
     * @return 转换后集合
     */
    public List<T> importExcel(InputStream is) throws Exception {
        return importExcel(is, 0);
    }

    /**
     * 对excel表单默认第一个索引名转换成list
     *
     * @param is       输入流
     * @param titleNum 标题占用行数
     * @return 转换后集合
     */
    public List<T> importExcel(InputStream is, int titleNum) throws Exception {
        return importExcel(StringUtils.EMPTY, is, titleNum);
    }

    /**
     * 对excel表单指定表格索引名转换成list
     *
     * @param sheetName 表格索引名
     * @param titleNum  标题占用行数
     * @param is        输入流
     * @return 转换后集合
     */
    public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception {
        this.type = Excel.Type.IMPORT;
        this.wb = WorkbookFactory.create(is);
        List<T> list = new ArrayList<T>();
        // 如果指定sheet名,则取指定sheet中的内容 否则默认指向第1个sheet
        Sheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0);
        if (sheet == null) {
            throw new IOException("文件sheet不存在");
        }

        // 获取最后一个非空行的行下标，比如总行数为n，则返回的为n-1
        int rows = sheet.getLastRowNum();

        if (rows > 0) {
            // 定义一个map用于存放excel列的序号和field.
            Map<String, Integer> cellMap = new HashMap<String, Integer>();
            // 获取表头
            Row heard = sheet.getRow(titleNum);
            for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++) {
                Cell cell = heard.getCell(i);
                if (StringUtils.isNotNull(cell)) {
                    String value = this.getCellValue(heard, i).toString();
                    cellMap.put(value, i);
                } else {
                    cellMap.put(null, i);
                }
            }
            // 有数据时才处理 得到类的所有field.
            List<Object[]> fields = this.getFields();
            Map<Integer, Object[]> fieldsMap = new HashMap<Integer, Object[]>();
            for (Object[] objects : fields) {
                Excel attr = (Excel) objects[1];
                Integer column = cellMap.get(attr.name());
                if (column != null) {
                    fieldsMap.put(column, objects);
                }
            }
            for (int i = titleNum + 1; i <= rows; i++) {
                // 从第2行开始取数据,默认第一行是表头.
                Row row = sheet.getRow(i);
                // 判断当前行是否是空行
                if (isRowEmpty(row)) {
                    continue;
                }
                T entity = null;
                for (Map.Entry<Integer, Object[]> entry : fieldsMap.entrySet()) {
                    Object val = this.getCellValue(row, entry.getKey());

                    // 如果不存在实例则新建.
                    entity = (entity == null ? clazz.newInstance() : entity);
                    // 从map中得到对应列的field.
                    Field field = (Field) entry.getValue()[0];
                    Excel attr = (Excel) entry.getValue()[1];
                    // 取得类型,并根据对象类型设置值.
                    Class<?> fieldType = field.getType();
                    if (String.class == fieldType) {
                        String s = Convert.toStr(val);
                        if (StringUtils.endsWith(s, ".0")) {
                            val = StringUtils.substringBefore(s, ".0");
                        } else {
                            String dateFormat = field.getAnnotation(Excel.class).dateFormat();
                            if (StringUtils.isNotEmpty(dateFormat)) {
                                val = DateUtils.parseDateToStr(dateFormat, (Date) val);
                            } else {
                                val = Convert.toStr(val);
                            }
                        }
                    } else if ((Integer.TYPE == fieldType || Integer.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val))) {
                        val = Convert.toInt(val);
                    } else if (Long.TYPE == fieldType || Long.class == fieldType) {
                        val = Convert.toLong(val);
                    } else if (Double.TYPE == fieldType || Double.class == fieldType) {
                        val = Convert.toDouble(val);
                    } else if (Float.TYPE == fieldType || Float.class == fieldType) {
                        val = Convert.toFloat(val);
                    } else if (BigDecimal.class == fieldType) {
                        val = Convert.toBigDecimal(val);
                    } else if (Date.class == fieldType) {
                        if (val instanceof String) {
                            val = DateUtils.parseDate(val);
                        } else if (val instanceof Double) {
                            val = DateUtil.getJavaDate((Double) val);
                        }
                    } else if (Boolean.TYPE == fieldType || Boolean.class == fieldType) {
                        val = Convert.toBool(val, false);
                    }
                    if (StringUtils.isNotNull(fieldType)) {
                        String propertyName = field.getName();
                        if (StringUtils.isNotEmpty(attr.targetAttr())) {
                            propertyName = field.getName() + "." + attr.targetAttr();
                        } else if (StringUtils.isNotEmpty(attr.readConverterExp())) {
                            val = reverseByExp(Convert.toStr(val), attr.readConverterExp(), attr.separator());
                        } else if (!attr.handler().equals(ExcelHandlerAdapter.class)) {
                            val = dataFormatHandlerAdapter(val, attr);
                        }
                        ReflectUtils.invokeSetter(entity, propertyName, val);
                    }
                }
                list.add(entity);
            }
        }
        return list;
    }

    /**
     * 对list数据源将其里面的数据导入到excel表单
     *
     * @param response  返回数据
     * @param list      导出数据集合
     * @param sheetName 工作表的名称
     * @return 结果
     * @throws IOException
     */
    public void exportExcel(HttpServletResponse response, List<T> list, String sheetName) {
        exportExcel(response, list, sheetName, StringUtils.EMPTY);
    }

    /**
     * 对list数据源将其里面的数据导入到excel表单
     *
     * @param response  返回数据
     * @param list      导出数据集合
     * @param sheetName 工作表的名称
     * @param title     标题
     * @return 结果
     * @throws IOException
     */
    public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title) {
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        response.setCharacterEncoding("utf-8");
        this.init(list, sheetName, title, Excel.Type.EXPORT);
        exportExcel(response);
    }

    /**
     * 导出多个sheet页数据
     *
     * @param response
     * @param dataMap       key: sheet名称 key：数据列表
     * @param sheetNameList
     */
    public void exportExcel(HttpServletResponse response,Map<String, Class> clazzMap, Map<String, List<T>> dataMap, List<String> sheetNameList) {
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        response.setCharacterEncoding("utf-8");

        this.wb = new SXSSFWorkbook(500);
        this.styles = createStyles(wb);

        for (int i = 0; i < sheetNameList.size(); i++) {
            String sheetName = sheetNameList.get(i);
            log.info("创建sheet: {}", sheetName);
            this.clazz = clazzMap.get(sheetName);
            this.list = dataMap.get(sheetName);
            this.sheetName = sheetName;
            this.type = Excel.Type.EXPORT;
            createExcelField();
            this.sheet = wb.createSheet();
            wb.setSheetName(i, sheetName);
            // 产生一行
            Row row = sheet.createRow(rownum);
            int column = 0;
            // 写入各个字段的列头名称
            for (Object[] os : fields) {
                Excel excel = (Excel) os[1];
                this.createCell(excel, row, column++);
            }
            if (Excel.Type.EXPORT.equals(type)) {
                fillExcelData(0, row);
                addStatisticsRow();
            }
            log.info("创建sheet完成: {}", sheetName);
        }
        try {
            wb.write(response.getOutputStream());
        } catch (Exception e) {
            log.error("导出Excel异常{}", e.getMessage());
        } finally {
            IOUtils.closeQuietly(wb);
        }
    }

    /**
     * 导出多个sheet页数据
     *
     * @param workbook
     * @param list
     * @param sheetName
     * @param sheetNo
     * @return
     */
    public Workbook exportExcel(Workbook workbook, List<T> list, String sheetName, Integer sheetNo) {
        if (workbook == null) {
            workbook = new SXSSFWorkbook(500);
        }
        this.wb = workbook;
        this.styles = createStyles(wb);
        log.info("创建sheet: {}", sheetName);
        this.list = list;
        this.sheetName = sheetName;
        this.type = Excel.Type.EXPORT;
        createExcelField();
        this.sheet = wb.createSheet();
        wb.setSheetName(sheetNo, sheetName);
        // 产生一行
        Row row = sheet.createRow(rownum);
        int column = 0;
        // 写入各个字段的列头名称
        for (Object[] os : fields) {
            Excel excel = (Excel) os[1];
            this.createCell(excel, row, column++);
        }
        if (Excel.Type.EXPORT.equals(type)) {
            fillExcelData(0, row);
            addStatisticsRow();
        }
        log.info("创建sheet完成: {}", sheetName);
        return workbook;
    }

    /**
     * 将工作蒲写入resp
     *
     * @param workbook
     * @param response
     */
    public void writeResponse(Workbook workbook, HttpServletResponse response) {
        try {
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            response.setCharacterEncoding("utf-8");
            workbook.write(response.getOutputStream());
        } catch (Exception e) {
            log.error("导出Excel异常{}", e.getMessage());
        } finally {
            IOUtils.closeQuietly(workbook);
        }
    }

    public void createExcelTemplate(HttpServletResponse response, String sheetName, String title) throws IOException {
        this.init(sheetName, title);
        //所有的参数顺序
        List<String> fieldList = mappingFields.stream().map(NameMapping::getFieldName).collect(Collectors.toList());
        boolean annotationPresent = clazz.isAnnotationPresent(ExcelFile.class);
        AssertUtils.requireTrue(annotationPresent, "不存在ExcelFile注解，不能生成Excel模板");

        ExcelFile excelFile = clazz.getAnnotation(ExcelFile.class);
        // 创建数据页
        Sheet dataSheet = null;
        if (excelFile.enableDataValidation()) {
            // 创建数据页
            dataSheet = wb.createSheet(excelFile.dataSheetName());
            // 设置隐藏属性
            wb.setSheetHidden(wb.getSheetIndex(dataSheet), excelFile.datasheetHidden());
        }
        // 实例化对象
        T object = ReflectUtil.newInstance(clazz);
        Map<String, Field> fieldMap = ReflectUtils.getFieldMap(object);

        int colIndex = 0;
        //创建表头和下拉
        for (NameMapping nameMapping : mappingFields) {
            String fieldName = nameMapping.getFieldName();
            Excel excel = nameMapping.getExcel();
            sheet.setColumnWidth(colIndex, (int) ((excel.width() + 0.72) * 256));
            //创建级联的下拉
            if (excelFile.enableDataValidation()) {
                this.createColumnValidation(fieldList, excel, fieldMap.get(fieldName), wb, sheet, dataSheet, colIndex);
            }
            //创建表头
            this.createCell(0, sheet, rownum, colIndex++, excel.name());
        }
        this.exportTemplate(response, excelFile.fileName());
    }

    public void createExcelTemplate(HttpServletResponse response, List<T> list, String sheetName, String title) throws IOException {
        this.init(sheetName, title);
        //所有的参数顺序
        List<String> fieldList = mappingFields.stream().map(NameMapping::getFieldName).collect(Collectors.toList());
        boolean annotationPresent = clazz.isAnnotationPresent(ExcelFile.class);
        AssertUtils.requireTrue(annotationPresent, "不存在ExcelFile注解，不能生成Excel模板");

        ExcelFile excelFile = clazz.getAnnotation(ExcelFile.class);
        // 创建数据页
        Sheet dataSheet = null;
        if (excelFile.enableDataValidation()) {
            // 创建数据页
            dataSheet = wb.createSheet(excelFile.dataSheetName());
            // 设置隐藏属性
            wb.setSheetHidden(wb.getSheetIndex(dataSheet), excelFile.datasheetHidden());
        }
        // 实例化对象
        T object = ReflectUtil.newInstance(clazz);
        Map<String, Field> fieldMap = ReflectUtils.getFieldMap(object);

        int colIndex = 0;
        //创建表头和下拉
        for (NameMapping nameMapping : mappingFields) {
            String fieldName = nameMapping.getFieldName();
            Excel excel = nameMapping.getExcel();
            sheet.setColumnWidth(colIndex, (int) ((excel.width() + 0.72) * 256));
            //创建级联的下拉
            if (excelFile.enableDataValidation()) {
                this.createColumnValidation(fieldList, excel, fieldMap.get(fieldName), wb, sheet, dataSheet, colIndex);
            }
            //创建表头
            this.createCell(0, sheet, rownum, colIndex++, excel.name());
        }
        this.exportTemplate(response, list, excelFile.fileName());
    }

    /**
     * 对list数据源将其里面的数据导入到excel表单
     *
     * @param sheetName 工作表的名称
     * @return 结果
     */
    /**
     * 对list数据源将其里面的数据导入到excel表单
     *
     * @param sheetName 工作表的名称
     * @return 结果
     */
    public void importTemplateExcel(HttpServletResponse response, String sheetName) {
        importTemplateExcel(response, sheetName, StringUtils.EMPTY);
    }

    /**
     * 对list数据源将其里面的数据导入到excel表单
     *
     * @param sheetName 工作表的名称
     * @param title     标题
     * @return 结果
     */
    public void importTemplateExcel(HttpServletResponse response, String sheetName, String title) {
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        response.setCharacterEncoding("utf-8");
        this.init(null, sheetName, title, Excel.Type.IMPORT);
        exportExcel(response);
    }

    /**
     * 对list数据源将其里面的数据导入到excel表单
     *
     * @return 结果
     */
    public void exportExcel(HttpServletResponse response) {
        try {
            writeSheet();
            wb.write(response.getOutputStream());
        } catch (Exception e) {
            log.error("导出Excel异常{}", e.getMessage());
        } finally {
            IOUtils.closeQuietly(wb);
        }
    }

    private void exportTemplate(HttpServletResponse response, String fileName) throws IOException {
        if (null != response) {
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            response.setCharacterEncoding("utf-8");
            try {
                wb.write(response.getOutputStream());
            } catch (Exception e) {
                log.error("生成Excel模板异常{}", e.getMessage());
            } finally {
                IOUtils.closeQuietly(wb);
            }
        } else {
            //若需要生成指定文件路径，在这里自定义即可
            FileOutputStream out = new FileOutputStream(fileName);
            wb.write(out);
            out.close();
        }
    }

    private void exportTemplate(HttpServletResponse response,List<T> list, String fileName) throws IOException {
        if (null != response) {
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            response.setCharacterEncoding("utf-8");
            try {
                for (int index = 0; index < list.size(); index++) {
                    // 产生一行
                    Row row = sheet.createRow((index + 1));
                    int column = 0;
                    // 得到导出对象.
                    T vo = (T) list.get(index);
                    for (Object[] os : fields) {
                        Field field = (Field) os[0];
                        Excel excel = (Excel) os[1];
                        this.addCell(excel, row, vo, field, column++);
                    }
                }
                wb.write(response.getOutputStream());
            } catch (Exception e) {
                log.error("生成Excel模板异常{}", e.getMessage());
            } finally {
                IOUtils.closeQuietly(wb);
            }
        } else {
            //若需要生成指定文件路径，在这里自定义即可
            FileOutputStream out = new FileOutputStream(fileName);
            wb.write(out);
            out.close();
        }
    }

    /**
     * 创建写入数据到Sheet
     */
    public void writeSheet() {
        // 取出一共有多少个sheet.
        int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize));
        log.info("sheetNo: {}", sheetNo);
        for (int index = 0; index < sheetNo; index++) {
            createSheet(sheetNo, index);

            // 产生一行
            Row row = sheet.createRow(rownum);
            int column = 0;
            // 写入各个字段的列头名称
            for (Object[] os : fields) {
                Excel excel = (Excel) os[1];
                this.createCell(excel, row, column++);
            }
            if (Excel.Type.EXPORT.equals(type)) {
                fillExcelData(index, row);
                addStatisticsRow();
            }
        }
    }

    /**
     * 填充excel数据
     *
     * @param index 序号
     * @param row   单元格行
     */
    public void fillExcelData(int index, Row row) {
        int startNo = index * sheetSize;
        int endNo = Math.min(startNo + sheetSize, list.size());
        log.info("index: {}, startNo: {}, endNo: {}", index, startNo, endNo);
        for (int i = startNo; i < endNo; i++) {
            row = sheet.createRow(i + 1 + rownum - startNo);
            // 得到导出对象.
            T vo = (T) list.get(i);
            log.info("导出数据对象: {}", JSONObject.toJSONString(vo));
            int column = 0;
            for (Object[] os : fields) {
                Field field = (Field) os[0];
                Excel excel = (Excel) os[1];
                log.info("字段：{}", field);
                this.addCell(excel, row, vo, field, column++);
            }
        }
    }

    /**
     * 创建表格样式
     *
     * @param wb 工作薄对象
     * @return 样式列表
     */
    private Map<String, CellStyle> createStyles(Workbook wb) {
        // 写入各条记录,每条记录对应excel表中的一行
        Map<String, CellStyle> styles = new HashMap<String, CellStyle>();
        CellStyle style = wb.createCellStyle();
        style.setAlignment(HorizontalAlignment.LEFT);
        style.setVerticalAlignment(VerticalAlignment.CENTER);
        Font titleFont = wb.createFont();
        titleFont.setFontName("Arial");
        titleFont.setFontHeightInPoints((short) 12);
        //换行
        style.setWrapText(true);
        titleFont.setBold(false);
        style.setFont(titleFont);
        styles.put("title", style);

        style = wb.createCellStyle();
        style.setAlignment(HorizontalAlignment.CENTER);
        style.setVerticalAlignment(VerticalAlignment.CENTER);
        style.setBorderRight(BorderStyle.THIN);
        style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        style.setBorderLeft(BorderStyle.THIN);
        style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        style.setBorderTop(BorderStyle.THIN);
        style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        style.setBorderBottom(BorderStyle.THIN);
        style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        Font dataFont = wb.createFont();
        dataFont.setFontName("Arial");
        dataFont.setFontHeightInPoints((short) 10);
        style.setFont(dataFont);
        styles.put("data", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(HorizontalAlignment.CENTER);
        style.setVerticalAlignment(VerticalAlignment.CENTER);
        //设置背景色
        XSSFCellStyle styleTemp = ((XSSFCellStyle) style);
        XSSFColor xssfColor = new XSSFColor(new java.awt.Color(244, 176, 132));
        styleTemp.setFillForegroundColor(xssfColor);
        // 背景色填充样式：单色填充
        style.setFillPattern(FillPatternType.SOLID_FOREGROUND);

        Font headerFont = wb.createFont();
        headerFont.setFontName("Arial");
        headerFont.setFontHeightInPoints((short) 12);
        headerFont.setBold(true);
        // 字体颜色：黑色
        headerFont.setColor(IndexedColors.BLACK.getIndex());
        style.setFont(headerFont);
        styles.put("header", style);

        style = wb.createCellStyle();
        style.setAlignment(HorizontalAlignment.CENTER);
        style.setVerticalAlignment(VerticalAlignment.CENTER);
        Font totalFont = wb.createFont();
        totalFont.setFontName("Arial");
        totalFont.setFontHeightInPoints((short) 10);
        style.setFont(totalFont);
        styles.put("total", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(HorizontalAlignment.LEFT);
        styles.put("data1", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(HorizontalAlignment.CENTER);
        styles.put("data2", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(HorizontalAlignment.RIGHT);
        styles.put("data3", style);

        return styles;
    }

    /**
     * 创建单元格
     */
    public Cell createCell(Excel attr, Row row, int column) {
        // 创建列
        Cell cell = row.createCell(column);
        // 写入列信息
        cell.setCellValue(attr.name());
        setDataValidation(attr, row, column);
        cell.setCellStyle(styles.get("header"));
        return cell;
    }

    private void createCell(int type, Sheet sheet, int rowIndex, int colIndex, Object val) {
        Row row = sheet.getRow(rowIndex);
        if (row == null) {
            row = sheet.createRow(rowIndex);
        }
        // 设置行高
        row.setHeight(maxHeight);
        Cell cell = row.getCell(colIndex);
        if (cell == null) {
            cell = row.createCell(colIndex);
        }
        if (type == 0) {
            cell.setCellStyle(styles.get("header"));
            row.setHeightInPoints(40);
        }
        cell.setCellValue(val == null ? "" : val.toString());
    }

    /**
     * 合并单元格设置行高
     * 计算合并单元格的总宽度和它的内容，然后把宽度设置在一个没有用到的单元格
     *
     * @param sourceRow
     */
    private void cellAndSetRowHeight(XSSFRow sourceRow) {
        for (int cellIndex = sourceRow.getFirstCellNum(); cellIndex <= sourceRow.getPhysicalNumberOfCells(); cellIndex++) {
            double maxHeight = sourceRow.getHeight();
            if (cellIndex < 0) {
                continue;
            }
            XSSFCell sourceCell = sourceRow.getCell(cellIndex);
            String cellContent = getCellContentAsString(sourceCell);
            if (StringUtils.isEmpty(cellContent)) {
                continue;
            }
            //单元格的宽高及单元格信息
            Map<String, Object> cellInfoMap = this.getCellInfo(sourceCell);
            Integer cellWidth = (Integer) cellInfoMap.get("width");
            Integer cellHeight = (Integer) cellInfoMap.get("height");
            if (cellHeight > maxHeight) {
                maxHeight = cellHeight;
            }
            XSSFCellStyle cellStyle = sourceCell.getCellStyle();
            XSSFFont font = cellStyle.getFont();
            short fontHeight = font.getFontHeight();
            // double cellContentWidth = cellContent.getBytes().length * 2 * 256;
            double cellContentWidth = cellContent.getBytes().length * 320;
            double stringNeedsRows = cellContentWidth / cellWidth;
            if (stringNeedsRows < 1.0) {
                stringNeedsRows = 1.0;
            }
            double stringNeedsHeight = (double) fontHeight * stringNeedsRows;

            if (stringNeedsHeight > maxHeight) {
                maxHeight = stringNeedsHeight;
                if (maxHeight / cellHeight > 5) {
                    maxHeight = 4 * cellHeight;
                }
                maxHeight = Math.ceil(maxHeight);
                Boolean isPartOfRowsRegion = (Boolean) cellInfoMap.get("isPartOfRowsRegion");
                if (isPartOfRowsRegion) {
                    Integer firstRow = (Integer) cellInfoMap.get("firstRow");
                    Integer lastRow = (Integer) cellInfoMap.get("lastRow");
                    //平均每行需要增加的行高
                    double addHeight = (maxHeight - cellHeight) / (lastRow - firstRow + 1);
                    for (int i = firstRow; i <= lastRow; i++) {
                        double rowsRegionHeight = sourceRow.getSheet().getRow(i).getHeight() + addHeight;
                        sourceRow.getSheet().getRow(i).setHeight((short) rowsRegionHeight);
                    }
                } else {
                    sourceRow.setHeight((short) maxHeight);
                }
            }
        }
    }

    public int getMergedRows(XSSFRow sourceRow) {
        int rows = 1;
        int maxRow = 1;
        for (int cellIndex = sourceRow.getFirstCellNum(); cellIndex <= sourceRow.getPhysicalNumberOfCells(); cellIndex++) {
            Integer firstRow = 0;
            Integer lastRow = 0;
            if (cellIndex < 0) continue;
            XSSFCell sourceCell = sourceRow.getCell(cellIndex);
            if (sourceCell != null) {
                Map<String, Object> cellInfoMap = getCellInfo(sourceCell);
                Boolean isPartOfRowsRegion = (Boolean) cellInfoMap.get("isPartOfRowsRegion");
                if (isPartOfRowsRegion) {
                    firstRow = (Integer) cellInfoMap.get("firstRow");
                    lastRow = (Integer) cellInfoMap.get("lastRow");
                }

                rows = lastRow - firstRow + 1;
                if (rows > maxRow) {
                    maxRow = rows;
                }
            }

        }
        return maxRow;
    }

    private String getCellContentAsString(XSSFCell cell) {
        if (null == cell) {
            return "";
        }
        String result = "";
        switch (cell.getCellType()) {
            case NUMERIC:
                String s = String.valueOf(cell.getNumericCellValue());
                if (StringUtils.isNotEmpty(s)) {
                    if (s.endsWith(".0")) {
                        s = s.substring(0, s.length() - 2);
                    }
                }
                result = s;
                break;
            case STRING:
                result = String.valueOf(cell.getRichStringCellValue());
                break;
            case BOOLEAN:
                result = String.valueOf(cell.getBooleanCellValue());
                break;
            default:
                break;
        }
        return result;
    }

    private Map<String, Object> getCellInfo(XSSFCell cell) {
        Map<String, Object> map = new HashMap(12);
        XSSFSheet sheet = cell.getSheet();
        int rowIndex = cell.getRowIndex();
        int columnIndex = cell.getColumnIndex();
        boolean isPartOfRegion = false;
        int firstColumn = 0;
        int lastColumn = 0;
        int firstRow = 0;
        int lastRow = 0;
        int sheetMergeCount = sheet.getNumMergedRegions();
        for (int i = 0; i < sheetMergeCount; i++) {
            CellRangeAddress c = sheet.getMergedRegion(i);
            firstColumn = c.getFirstColumn();
            lastColumn = c.getLastColumn();
            firstRow = c.getFirstRow();
            lastRow = c.getLastRow();
            if (rowIndex >= firstRow && rowIndex <= lastRow) {
                if (columnIndex >= firstColumn && columnIndex <= lastColumn) {
                    isPartOfRegion = true;
                    break;
                }
            }
        }
        // Map<String,Object> map = new HashMap();
        Integer width = 0;
        Integer height = 0;
        boolean isPartOfRowsRegion = false;
        if (isPartOfRegion) {
            for (int i = firstColumn; i <= lastColumn; i++) {
                width += sheet.getColumnWidth(i);
            }
            for (int i = firstRow; i <= lastRow; i++) {
                if (sheet.getRow(i) == null) {
                    height += sheet.createRow(i).getHeight();
                } else {
                    height += sheet.getRow(i).getHeight();
                }

            }
            if (lastRow > firstRow) {
                isPartOfRowsRegion = true;
            }
        } else {
            width = sheet.getColumnWidth(columnIndex);
            height += cell.getRow().getHeight();
        }
        map.put("isPartOfRowsRegion", isPartOfRowsRegion);
        map.put("firstRow", firstRow);
        map.put("lastRow", lastRow);
        map.put("width", width);
        map.put("height", height);
        return map;
    }

    /**
     * 设置单元格信息
     *
     * @param value 单元格值
     * @param attr  注解相关
     * @param cell  单元格信息
     */
    public void setCellVo(Object value, Excel attr, Cell cell) {
        if (value instanceof BigDecimal) {
            BigDecimal bigDecimal = (BigDecimal) value;
            value = NumberUtil.toStr(bigDecimal);
        }
        if (Excel.ColumnType.STRING == attr.cellType()) {
            if (value instanceof String) {
                String val = (String) value;
                cell.setCellValue(StringUtils.isEmpty(val) ? attr.defaultValue() : val + attr.suffix());
            } else {
                cell.setCellValue(Objects.isNull(value) ? attr.defaultValue() : value + attr.suffix());
            }
        } else if (Excel.ColumnType.NUMERIC == attr.cellType()) {
            if (StringUtils.isNotNull(value)) {
                cell.setCellValue(StringUtils.contains(Convert.toStr(value), ".") ? Convert.toDouble(value) : Convert.toInt(value));
            }
        }
    }

    /**
     * 获取画布
     */
    public static Drawing<?> getDrawingPatriarch(Sheet sheet) {
        if (sheet.getDrawingPatriarch() == null) {
            sheet.createDrawingPatriarch();
        }
        return sheet.getDrawingPatriarch();
    }


    /**
     * 创建表格样式
     */
    public void setDataValidation(Excel attr, Row row, int column) {
        if (attr.name().indexOf("注：") >= 0) {
            sheet.setColumnWidth(column, 6000);
        } else {
            // 设置列宽
            sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));
        }
        // 如果设置了提示信息则鼠标放上去提示.
        if (StringUtils.isNotEmpty(attr.prompt())) {
            // 这里默认设了2-101列提示.
            setXSSFPrompt(sheet, "", attr.prompt(), 1, 100, column, column);
        }
        // 如果设置了combo属性则本列只能选择不能输入
        if (attr.combo().length > 0) {
            // 这里默认设了2-101列只能选择不能输入.
            setXSSFValidation(sheet, attr.combo(), 1, 100, column, column);
        }
    }

    /**
     * 添加单元格
     */
    public Cell addCell(Excel attr, Row row, T vo, Field field, int column) {
        Cell cell = null;
        try {
            // 设置行高
            row.setHeight(maxHeight);
            // 根据Excel中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.
            if (attr.isExport()) {
                // 创建cell
                cell = row.createCell(column);
                int align = attr.align().value();
                cell.setCellStyle(styles.get("data" + (align >= 1 && align <= 3 ? align : "")));

                // 用于读取对象中的属性
                Object value = getTargetValue(vo, field, attr);
                String dateFormat = attr.dateFormat();
                String readConverterExp = attr.readConverterExp();
                String separator = attr.separator();
                if (StringUtils.isNotEmpty(dateFormat) && StringUtils.isNotNull(value)) {
                    String timeVal = null;
                    if (value instanceof LocalDateTime) {
                        LocalDateTime localDateTimeVal = (LocalDateTime) value;
                        timeVal = cn.hutool.core.date.DateUtil.format(localDateTimeVal, dateFormat);
                    } else {
                        timeVal = DateUtils.parseDateToStr(dateFormat, (Date) value);
                    }
                    cell.setCellValue(timeVal);
                } else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value)) {
                    cell.setCellValue(convertByExp(Convert.toStr(value), readConverterExp, separator));
                } else if (value instanceof BigDecimal && -1 != attr.scale()) {
                    cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());

                } else if (!attr.handler().equals(ExcelHandlerAdapter.class)) {
                    cell.setCellValue(dataFormatHandlerAdapter(value, attr));
                } else {
                    // 设置列类型
                    setCellVo(value, attr, cell);
                }
                addStatisticsData(column, Convert.toStr(value), attr);
            }
        } catch (Exception e) {
            log.error("导出Excel失败{}", e);
        }
        return cell;
    }

    /**
     * 设置 POI XSSFSheet 单元格提示
     *
     * @param sheet         表单
     * @param promptTitle   提示标题
     * @param promptContent 提示内容
     * @param firstRow      开始行
     * @param endRow        结束行
     * @param firstCol      开始列
     * @param endCol        结束列
     */
    public void setXSSFPrompt(Sheet sheet, String promptTitle, String promptContent, int firstRow, int endRow,
                              int firstCol, int endCol) {
        DataValidationHelper helper = sheet.getDataValidationHelper();
        DataValidationConstraint constraint = helper.createCustomConstraint("DD1");
        CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
        DataValidation dataValidation = helper.createValidation(constraint, regions);
        dataValidation.createPromptBox(promptTitle, promptContent);
        dataValidation.setShowPromptBox(true);
        sheet.addValidationData(dataValidation);
    }

    /**
     * 设置某些列的值只能输入预制的数据,显示下拉框.
     *
     * @param sheet    要设置的sheet.
     * @param textlist 下拉框显示的内容
     * @param firstRow 开始行
     * @param endRow   结束行
     * @param firstCol 开始列
     * @param endCol   结束列
     * @return 设置好的sheet.
     */
    public void setXSSFValidation(Sheet sheet, String[] textlist, int firstRow, int endRow, int firstCol, int endCol) {
        DataValidationHelper helper = sheet.getDataValidationHelper();
        // 加载下拉列表内容
        DataValidationConstraint constraint = helper.createExplicitListConstraint(textlist);
        // 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
        CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
        // 数据有效性对象
        DataValidation dataValidation = helper.createValidation(constraint, regions);
        // 处理Excel兼容性问题
        if (dataValidation instanceof XSSFDataValidation) {
            dataValidation.setSuppressDropDownArrow(true);
            dataValidation.setShowErrorBox(true);
        } else {
            dataValidation.setSuppressDropDownArrow(false);
        }

        sheet.addValidationData(dataValidation);
    }

    /**
     * 解析导出值 0=男,1=女,2=未知
     *
     * @param propertyValue 参数值
     * @param converterExp  翻译注解
     * @param separator     分隔符
     * @return 解析后值
     */
    public static String convertByExp(String propertyValue, String converterExp, String separator) {
        StringBuilder propertyString = new StringBuilder();
        String[] convertSource = converterExp.split(",");
        for (String item : convertSource) {
            String[] itemArray = item.split("=");
            if (StringUtils.containsAny(separator, propertyValue)) {
                for (String value : propertyValue.split(separator)) {
                    if (itemArray[0].equals(value)) {
                        propertyString.append(itemArray[1] + separator);
                        break;
                    }
                }
            } else {
                if (itemArray[0].equals(propertyValue)) {
                    return itemArray[1];
                }
            }
        }
        return StringUtils.stripEnd(propertyString.toString(), separator);
    }

    /**
     * 反向解析值 男=0,女=1,未知=2
     *
     * @param propertyValue 参数值
     * @param converterExp  翻译注解
     * @param separator     分隔符
     * @return 解析后值
     */
    public static String reverseByExp(String propertyValue, String converterExp, String separator) {
        StringBuilder propertyString = new StringBuilder();
        String[] convertSource = converterExp.split(",");
        for (String item : convertSource) {
            String[] itemArray = item.split("=");
            if (StringUtils.containsAny(separator, propertyValue)) {
                for (String value : propertyValue.split(separator)) {
                    if (itemArray[1].equals(value)) {
                        propertyString.append(itemArray[0] + separator);
                        break;
                    }
                }
            } else {
                if (itemArray[1].equals(propertyValue)) {
                    return itemArray[0];
                }
            }
        }
        return StringUtils.stripEnd(propertyString.toString(), separator);
    }

    /**
     * 数据处理器
     *
     * @param value 数据值
     * @param excel 数据注解
     * @return
     */
    public String dataFormatHandlerAdapter(Object value, Excel excel) {
        try {
            Object instance = excel.handler().newInstance();
            Method formatMethod = excel.handler().getMethod("format", new Class[]{Object.class, String[].class});
            value = formatMethod.invoke(instance, value, excel.args());
        } catch (Exception e) {
            log.error("不能格式化数据 " + excel.handler(), e.getMessage());
        }
        return Convert.toStr(value);
    }

    /**
     * 合计统计信息
     */
    private void addStatisticsData(Integer index, String text, Excel entity) {
        if (entity != null && entity.isStatistics()) {
            Double temp = 0D;
            if (!statistics.containsKey(index)) {
                statistics.put(index, temp);
            }
            try {
                temp = Double.valueOf(text);
            } catch (NumberFormatException e) {
            }
            statistics.put(index, statistics.get(index) + temp);
        }
    }

    /**
     * 创建统计行
     */
    public void addStatisticsRow() {
        if (statistics.size() > 0) {
            Row row = sheet.createRow(sheet.getLastRowNum() + 1);
            Set<Integer> keys = statistics.keySet();
            Cell cell = row.createCell(0);
            cell.setCellStyle(styles.get("total"));
            cell.setCellValue("合计");

            for (Integer key : keys) {
                cell = row.createCell(key);
                cell.setCellStyle(styles.get("total"));
                cell.setCellValue(DOUBLE_FORMAT.format(statistics.get(key)));
            }
            statistics.clear();
        }
    }

    /**
     * 获取bean中的属性值
     *
     * @param vo    实体对象
     * @param field 字段
     * @param excel 注解
     * @return 最终的属性值
     * @throws Exception
     */
    private Object getTargetValue(T vo, Field field, Excel excel) throws Exception {
        Object o = field.get(vo);
        if (StringUtils.isNotEmpty(excel.targetAttr())) {
            String target = excel.targetAttr();
            if (target.indexOf(".") > -1) {
                String[] targets = target.split("[.]");
                for (String name : targets) {
                    o = getValue(o, name);
                }
            } else {
                o = getValue(o, target);
            }
        }
        return o;
    }

    /**
     * 以类的属性的get方法方法形式获取值
     *
     * @param o
     * @param name
     * @return value
     * @throws Exception
     */
    private Object getValue(Object o, String name) throws Exception {
        if (StringUtils.isNotNull(o) && StringUtils.isNotEmpty(name)) {
            Class<?> clazz = o.getClass();
            Field field = clazz.getDeclaredField(name);
            field.setAccessible(true);
            o = field.get(o);
        }
        return o;
    }

    /**
     * 得到所有定义字段
     */
    private void createExcelField() {
        this.fields = getFields();
        this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());
        this.mappingFields = this.getMappingFields();
        this.maxHeight = this.getRowHeight();
    }

    /**
     * 获取字段注解信息
     */
    public List<Object[]> getFields() {
        List<Object[]> fields = new ArrayList<Object[]>();
        List<Field> tempFields = new ArrayList<>();
        tempFields.addAll(Arrays.asList(clazz.getSuperclass().getDeclaredFields()));
        tempFields.addAll(Arrays.asList(clazz.getDeclaredFields()));
        for (Field field : tempFields) {
            // 单注解
            if (field.isAnnotationPresent(Excel.class)) {
                Excel attr = field.getAnnotation(Excel.class);
                if (attr != null && (attr.type() == Excel.Type.ALL || attr.type() == type)) {
                    field.setAccessible(true);
                    fields.add(new Object[]{field, attr});
                }
            }

            // 多注解
            if (field.isAnnotationPresent(Excels.class)) {
                Excels attrs = field.getAnnotation(Excels.class);
                Excel[] excels = attrs.value();
                for (Excel attr : excels) {
                    if (attr != null && (attr.type() == Excel.Type.ALL || attr.type() == type)) {
                        field.setAccessible(true);
                        fields.add(new Object[]{field, attr});
                    }
                }
            }
        }
        return fields;
    }

    private List<NameMapping> getMappingFields() {
        // 取到模板上的所有对象属性
        List<Field> tempFields = new ArrayList<>();
        tempFields.addAll(Arrays.asList(clazz.getSuperclass().getDeclaredFields()));
        tempFields.addAll(Arrays.asList(clazz.getDeclaredFields()));

        //得到所有的字段名和模板名
        List<NameMapping> list = new ArrayList<>(16);
        //得到当前需要导出的列注解
        for (Field field : tempFields) {
            if (field.isAnnotationPresent(Excel.class)) {
                // 暂时只考虑单注解
                Excel attr = field.getAnnotation(Excel.class);
                if (attr != null) {
                    field.setAccessible(true);
                    list.add(new NameMapping(field.getName(), attr));
                }
            }
        }
        //将数据按order升序
        return list.stream().sorted(Comparator.comparing(x -> x.getExcel().sort())).collect(Collectors.toList());
    }

    /**
     * 根据注解获取最大行高
     */
    public short getRowHeight() {
        double maxHeight = 0;
        for (Object[] os : this.fields) {
            Excel excel = (Excel) os[1];
            maxHeight = maxHeight > excel.height() ? maxHeight : excel.height();
        }
        return (short) (maxHeight * 20);
    }

    /**
     * 创建一个工作簿
     */
    public void createWorkbook() {
        this.wb = new SXSSFWorkbook(500);
        this.sheet = wb.createSheet();
        wb.setSheetName(0, sheetName);
        this.styles = createStyles(wb);
    }

    public void createWorkbook(boolean xssf) {
        try {
            this.wb = WorkbookFactory.create(xssf);
            this.sheet = wb.createSheet(this.sheetName);
            this.styles = this.createStyles(wb);
        } catch (IOException e) {
            log.error("Excel对象初始化失败", e);
        }
        AssertUtils.requireTrue(this.wb != null || this.sheet != null, "Excel创建初始化失败");
    }

    /**
     * 创建工作表
     *
     * @param sheetNo sheet数量
     * @param index   序号
     */
    public void createSheet(int sheetNo, int index) {
        // 设置工作表的名称.
        if (sheetNo > 1 && index > 0) {
            this.sheet = wb.createSheet();
            this.createTitle();
            wb.setSheetName(index, sheetName + index);
        }
    }

    /**
     * 获取单元格值
     *
     * @param row    获取的行
     * @param column 获取单元格列号
     * @return 单元格值
     */
    public Object getCellValue(Row row, int column) {
        if (row == null) {
            return row;
        }
        Object val = "";
        try {
            Cell cell = row.getCell(column);
            if (StringUtils.isNotNull(cell)) {
                if (cell.getCellType() == CellType.NUMERIC || cell.getCellType() == CellType.FORMULA) {
                    val = cell.getNumericCellValue();
                    if (DateUtil.isCellDateFormatted(cell)) {
                        val = DateUtil.getJavaDate((Double) val); // POI Excel 日期格式转换
                    } else {
                        if ((Double) val % 1 != 0) {
                            val = new BigDecimal(val.toString());
                        } else {
                            val = new DecimalFormat("0").format(val);
                        }
                    }
                } else if (cell.getCellType() == CellType.STRING) {
                    val = cell.getStringCellValue();
                } else if (cell.getCellType() == CellType.BOOLEAN) {
                    val = cell.getBooleanCellValue();
                } else if (cell.getCellType() == CellType.ERROR) {
                    val = cell.getErrorCellValue();
                }

            }
        } catch (Exception e) {
            return val;
        }
        return val;
    }

    /**
     * 判断是否是空行
     *
     * @param row 判断的行
     * @return
     */
    private boolean isRowEmpty(Row row) {
        if (row == null) {
            return true;
        }
        for (int i = row.getFirstCellNum(); i < row.getLastCellNum(); i++) {
            Cell cell = row.getCell(i);
            if (cell != null && cell.getCellType() != CellType.BLANK) {
                return false;
            }
        }
        return true;
    }

    private void createColumnValidation(List<String> fieldList, Excel value, Field field, Workbook workbook, Sheet sheet, Sheet dataSheet, int colIndex) {
        if (field == null || dataSheet == null) {
            return;
        }
        field.setAccessible(true);
        String datasourceMethod = value.datasourceMethod();
        String beanName = value.datasourceBeanName();
        String beanMethod = value.datasourceBeanMethod();

        // 优先按Spring.bean的方法获取数据
        Object invokeResult = null;
        try {
            if (StringUtils.isNotEmpty(beanName) && StringUtils.isNotEmpty(beanMethod)) {
                invokeResult = SpringUtils.invokeMethod(beanName, beanMethod, null);
            } else {
                if (StringUtils.isEmpty(datasourceMethod)) {
                    return;
                }
                invokeResult = this.getDatasource(datasourceMethod);
            }
        } catch (Exception e) {
            return;
        }

        String formulaIndirectFormat = "=INDIRECT(%s!$%s$%s)";
        // 判断是否有前置字段
        if (StringUtils.isBlank(value.constraintFieldName())) {
            if (!(invokeResult instanceof List)) {
                return;
            }
            List<String> dataList = (List<String>) invokeResult;
            //创建下拉的名称管理器
            int nameManage = createNameManage(workbook, dataSheet, field.getName(), dataList);
            String formulaIndirect = String.format(formulaIndirectFormat, dataSheet.getSheetName(), getCellColumnFlag(1), nameManage + 1);
            createDataValidate(sheet, formulaIndirect, value.validationType(), value.firstRow(), value.lastRow(), colIndex, colIndex);
        } else {
            if (!(invokeResult instanceof Map)) {
                return;
            }
            Map<String, List<String>> map = (Map<String, List<String>>) invokeResult;
            map.forEach((k, v) -> createNameManage(workbook, dataSheet, k, v));
            //得到前置字段在第几列
            int beforeColIndex = 0;
            for (int i = 0; i < fieldList.size(); i++) {
                if (fieldList.get(i).equals(value.constraintFieldName())) {
                    beforeColIndex = i;
                    break;
                }
            }
            for (int rowIndex = value.firstRow(); rowIndex <= value.lastRow(); rowIndex++) {
                String formulaIndirect = String.format(formulaIndirectFormat, sheet.getSheetName(), getCellColumnFlag(beforeColIndex + 1), rowIndex + 1);
                createDataValidate(sheet, formulaIndirect, value.validationType(), rowIndex, rowIndex, colIndex, colIndex);
            }
        }
    }

    private Object getDatasource(String methodFullName) throws InvocationTargetException, IllegalAccessException {
        int lastIndex = methodFullName.lastIndexOf('.');
        String className = methodFullName.substring(0, lastIndex);
        String methodName = methodFullName.substring(lastIndex + 1);
        try {
            Class<?> clazz = Class.forName(className);
            Method[] methods = clazz.getMethods();
            for (Method methodObject : methods) {
                if (methodObject.getName().equals(methodName)) {
                    Object obj = ReflectUtil.newInstance(clazz);
                    return methodObject.invoke(obj);
                }
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        return null;
    }

    private static void createDataValidate(Sheet sheet, String formula, int validationType, int firstRow, int lastRow, int firstCol, int lastCol) {
        CellRangeAddressList cellRangeAddressList = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol);
        XSSFDataValidationHelper xssfDataValidationHelper = new XSSFDataValidationHelper((XSSFSheet) sheet);
        XSSFDataValidationConstraint xssfDataValidationConstraint = new XSSFDataValidationConstraint(validationType, formula);
        DataValidation validation = xssfDataValidationHelper.createValidation(xssfDataValidationConstraint, cellRangeAddressList);
        validation.createErrorBox("输入有误！", "请选择下拉菜单里面的选项！");
        validation.setEmptyCellAllowed(false);
        validation.setShowErrorBox(true);
        sheet.addValidationData(validation);
    }


    private int createNameManage(Workbook workbook, Sheet sheet, String nameString,List<String> data) {
        //数据在第几行
        final int size = workbook.getAllNames().size();
        int columnIndex = 0;
        String format = "%s!$%s$%s:$%s$%s";
        Name name = workbook.createName();
        name.setNameName(nameString);
        String cellColumnFlag = getCellColumnFlag(columnIndex + 2);
        int nameManageRegan = CollectionUtils.isEmpty(data) ? 1 : data.size() + 1;
        String nameManageScope = String.format(format, sheet.getSheetName(), cellColumnFlag, size + 1, getCellColumnFlag(nameManageRegan), size + 1);
        name.setRefersToFormula(nameManageScope);
        createCell(1, sheet, size, columnIndex, nameString);
        if (CollectionUtils.isNotEmpty(data)) {
            for (Object val : data) {
                createCell(1, sheet, size, ++columnIndex, String.valueOf(val));
            }
        }
        return size;
    }

    private String getCellColumnFlag(int num) {
        String colFiled = "";
        int chuNum = 0;
        int yuNum = 0;
        if (num >= 1 && num <= 26) {
            colFiled = doHandle(num);
        } else {
            chuNum = num / 26;
            yuNum = num % 26;
            yuNum = yuNum == 0 ? 1 : yuNum;
            colFiled += doHandle(chuNum);
            colFiled += doHandle(yuNum);
        }
        return colFiled;
    }

    private String doHandle(int num) {
        return String.valueOf((char) (num + 64));
    }

    private class NameMapping {
        private String fieldName;
        private Excel excel;

        public NameMapping(String fieldName, Excel excel) {
            this.fieldName = fieldName;
            this.excel = excel;
        }

        public String getFieldName() {
            return fieldName;
        }

        public void setFieldName(String fieldName) {
            this.fieldName = fieldName;
        }

        public Excel getExcel() {
            return excel;
        }

        public void setExcel(Excel excel) {
            this.excel = excel;
        }
    }
}
